gdata: Support mounting archive files in GData cache.

chrome/browser/chromeos/gdata/gdata_util.h

Index: chrome/browser/chromeos/gdata/gdata_util.h
diff --git a/chrome/browser/chromeos/gdata/gdata_util.h b/chrome/browser/chromeos/gdata/gdata_util.h
index a7f5cd86ebc68d9ae30d359f96764de67a8f10cd..143e4d54231d7245448241b198722ec8351ae54a 100644
--- a/chrome/browser/chromeos/gdata/gdata_util.h
+++ b/chrome/browser/chromeos/gdata/gdata_util.h
@@ -62,6 +62,12 @@ void SetPermissionsForGDataCacheFiles(Profile* profile,
 
 // Returns true if gdata is currently active with the specified profile.
 bool IsGDataAvailable(Profile* profile);
+
+// Extracts resource_id, md5, and extra_suffix from cache path.

[satorux1, 2012/04/20 21:46:10]

would be nice to add some example of input and output to make it clear what this
function does. for instance, it'd be important to tell that |extra_suffix|
contains '.' or not.

+void ParseCacheFilePath(const FilePath& path,
+                        std::string* resource_id,
+                        std::string* md5,
+                        std::string* extra_suffix);

[satorux1, 2012/04/20 21:46:10]

i suggested "suffix", but "extension" would be better to make it consistent with
the terminology used elsewhere.

[satorux1, 2012/04/20 23:05:39]

missed this comment?

 }  // namespace util
 }  // namespace gdata